CN215936842U - Pedal and seat of chair - Google Patents

Abstract

The utility model discloses a chair pedal and a chair seat, comprising: the pedal is arranged at the outer end part of the sliding rail; the bicycle is characterized in that a hollow shaft is arranged at the front end of the slide rail, and the pedal is sleeved on the hollow shaft to form rotary connection; the hollow shaft is internally provided with an eccentric locking block which is rotatably installed, the wall of the hollow shaft is provided with a notch corresponding to the eccentric locking block, and the inner wall of the sleeving part of the pedal is provided with a locking groove matched with the eccentric locking block. Compared with the prior art, the pedal unlocking and locking can be conveniently realized only by rotating the eccentric locking block, the pedal adjustment is very convenient, the pedal is completely prevented from accidentally rotating under the locking action of the eccentric locking block after being adjusted in place, the supporting force of the pedal is also effectively improved, the pedal unlocking and locking device can meet the use requirements of different people, and the universality is good.

Description

Pedal and seat of chair

Technical Field

The utility model relates to the technical field of seats, in particular to a seat pedal and a seat with the seat pedal.

Background

In the prior art, common seats mainly include: both types with and without footrests. Wherein, when a user lies and has a rest without a pedal seat, the legs can not be effectively supported, and the defect of poor use comfort exists. A chair with pedals, the pedal structure of which is generally described in the Chinese patent application with the publication number CN 108323986A, a slide rail is arranged below a seat cushion, the slide rail slides telescopically relative to the seat cushion, and the pedals are rotatably arranged at the outer end parts of the slide rail. When the pedal is used, the sliding rail is pulled out, and then the pedal is rotated to a proper position.

However, in the prior art, the pedal rotation positioning is usually provided by the damping rotating shaft, and the problem that if the damping force is too large, the rotation resistance is large, and the adjustment is inconvenient; if the damping force is too small, the supporting force is insufficient, and the device cannot meet the use requirements of different people.

Disclosure of Invention

In view of the problems in the prior art, it is an object of the present invention to provide a chair pedal which is convenient to adjust and can be locked after being adjusted in place.

Another object of the present invention is to provide a seat having the above-described chair footrest.

In order to achieve the purpose, the utility model adopts the following technical scheme.

A seat footrest, comprising: the pedal is arranged at the outer end part of the sliding rail; the bicycle is characterized in that a hollow shaft is arranged at the front end of the slide rail, and the pedal is sleeved on the hollow shaft to form rotary connection; the hollow shaft is internally provided with an eccentric locking block which is rotatably installed, the wall of the hollow shaft is provided with a notch corresponding to the eccentric locking block, and the inner wall of the sleeving part of the pedal is provided with a locking groove matched with the eccentric locking block.

More preferably, the number of the slide rails is two, and each slide rail is connected with the bottom of the seat through a connecting seat or a seat support in a sliding manner.

More preferably, a fixed sleeve is respectively mounted at the front end of each slide rail, and a connection structure which can move axially and is fixed radially is formed between the hollow shaft and the fixed sleeve.

More preferably, an annular transition connecting piece is arranged between the pedal and the hollow shaft, and the transition connecting piece and a sleeving part of the pedal are radially fixed and axially slidable; a plurality of first grooves are formed in the inner peripheral edge of the transition connecting piece, each first groove forms a locking groove, and a plurality of second grooves are formed in the outer periphery of the eccentric locking block; the locking of the pedal is realized through the locking matching of the second groove and the first groove.

More preferably, a rotating shaft is connected between the two eccentric locking blocks, and the two eccentric locking blocks are driven to rotate by rotating the rotating shaft.

More preferably, a knob is provided corresponding to each eccentric locking piece and connected to the eccentric locking piece, and the rotation of the eccentric locking piece is realized by rotating the knob.

A chair seat comprises a seat frame and a chair pedal arranged at the lower side of the seat frame; characterized in that the chair footrest is as described above.

More preferably, the seat frame is a single frame seat or a double frame seat formed by splicing an upper frame and a lower frame; a cotton seat or a net seat is fixed on the seat frame.

More preferably, the seat frame is an aluminum alloy part, a hollow U-shaped seat support is arranged at the bottom of the seat frame, and a sliding groove matched with the sliding rail is arranged in an inner cavity of the U-shaped seat support.

More preferably, the seat frame is made of plastic, and a plastic chassis is mounted at the bottom of the seat frame.

The utility model has the beneficial effects that: during actual work, after the pedal rotates in place, the eccentric locking block is rotated to penetrate out of the hollow shaft from the notch, and then the eccentric locking block is locked and matched with the locking groove, so that the purpose of limiting the rotation of the pedal is achieved. When the position of the pedal needs to be adjusted, the eccentric locking block is rotated reversely to be retracted into the hollow shaft, so that the pedal is unlocked, and the pedal can rotate freely. Compared with the prior art, the pedal unlocking and locking can be conveniently realized only by rotating the eccentric locking block, the pedal adjustment is very convenient, the pedal is completely prevented from accidentally rotating under the locking action of the eccentric locking block after being adjusted in place, the supporting force of the pedal is also effectively improved, the pedal unlocking and locking device can meet the use requirements of different people, and the universality is good.

Drawings

Fig. 1 is a schematic structural view of a seat footrest provided in embodiment 1 of the present invention.

Fig. 2 is a schematic view showing the internal structure of fig. 1.

Fig. 3 shows a schematic view of the assembly of the transition piece between the foothold and the hollow shaft.

Fig. 4 is a schematic view showing the assembly of the rotating shaft and the eccentric locking piece.

Fig. 5 is a schematic structural view of a seat footrest provided in embodiment 2 of the present invention.

Fig. 6 is a schematic view of a seat structure provided in embodiment 3 of the present invention.

Fig. 7 is a schematic view of a seat structure provided in embodiment 4 of the present invention.

Fig. 8 is a schematic view of a seat structure provided in embodiment 5 of the present invention.

Reference numerals indicate the same.

1: slide rail, 2: step, 3: hollow shaft, 4: eccentric locking piece, 5: notch, 6: locking groove, 7: connecting seat, 8: fixed cover, 9: transition piece, 10: rotating shaft, 11: a knob, 12: seat frame, 13: seat holder, 14: a plastic chassis.

Detailed Description

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the feature, and in the description of the utility model, "at least" means one or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The following describes the embodiments of the present invention with reference to the drawings of the specification, so that the technical solutions and the advantages thereof are more clear and clear. The embodiments described below are exemplary and are intended to be illustrative of the utility model, but are not to be construed as limiting the utility model.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Example 1.

As shown in fig. 1 to 4, a seat footrest includes: the device comprises a slide rail 1 and a pedal 2 arranged at the outer end part of the slide rail 1; the bicycle is characterized in that a hollow shaft 3 is arranged at the front end of the slide rail 1, and the pedal 2 is sleeved on the hollow shaft 3 to form rotary connection; an eccentric locking block 4 which is rotatably installed is arranged in the hollow shaft 3, a notch 5 corresponding to the eccentric locking block 4 is formed in the wall of the hollow shaft 3, and a locking groove 6 matched with the eccentric locking block 4 is formed in the inner wall of the sleeving part of the pedal 2.

In actual operation, after the pedal 2 rotates in place, the eccentric locking block 4 is rotated to penetrate out of the hollow shaft 3 from the notch 5, and then is in locking fit with the locking groove 6, so that the purpose of limiting the rotation of the pedal 2 is achieved. When the position of the pedal 2 needs to be adjusted, the eccentric locking block 4 is rotated reversely to retract into the hollow shaft 3, so that the pedal 2 is unlocked, and the pedal 2 can rotate freely.

Compared with the prior art, the pedal of a seat that this embodiment provided only needs to rotate the pedal unblock and the locking of realization that eccentric locking piece 4 can be very convenient, it is very convenient that pedal adjusts, and pedal regulation targets in place the back, avoids pedal 2's unexpected rotation completely under the locking effect of eccentric locking piece 4, also effectively improves pedal 2's holding power, can use various different crowds ' user demand, and the commonality is good.

Referring to fig. 1 again, preferably, the two slide rails 1 are arranged in parallel, and each slide rail 1 is provided with a connecting seat 7 installed in a sliding manner, so that the whole seat pedal can be installed and used conveniently. In some embodiments, the connecting seat 7 may be omitted, and a sliding groove that is engaged with the sliding rail may be directly disposed on the seat support of the seat, which is not limited to this embodiment.

Preferably, a fixed sleeve 8 is respectively installed at the front end of each slide rail 1, and an axially movable and radially fixed structure is formed between the hollow shaft 3 and the fixed sleeve 8, so that the installation and the fixation are convenient, and the rotation between the hollow shaft and the fixed sleeve is avoided.

Obviously, according to different actual needs, those skilled in the art can also use other fixing structures known now or realized in the future to fix the hollow shaft, and the fixing structure is not limited to the above examples.

Referring to fig. 2 and 3, it is preferable that an annular transition piece 9 is disposed between the pedal 2 and the hollow shaft 3, and the transition piece 9 and the sleeve portion of the pedal 2 are radially fixed and axially slidable, so as to facilitate assembly of parts and ensure synchronous rotation of the two; a plurality of first grooves are formed in the inner peripheral edge of the transition connecting piece 9, each first groove forms a locking groove 6, and a plurality of second grooves are formed in the outer periphery of the eccentric locking block 4; the locking of the footrest 2 is achieved by the locking engagement of the second recess with the first recess.

Obviously, in some embodiments, the transition piece 9 can be omitted and the locking groove can be provided directly on the inner side of the pedal connection part, without being limited to this embodiment.

Referring to fig. 4, a rotating shaft 10 is connected between the two eccentric locking blocks 4, and the rotating shaft 10 is rotated to drive the two eccentric locking blocks 4 to rotate. Therefore, the pedal locking and unlocking adjustment is very convenient. In addition, the rotating shaft 10 can also play a role in supporting and reinforcing, and the structural strength of the whole pedal of the seat is effectively ensured.

Example 2.

Referring to fig. 5, the structure of the seat footrest provided in this embodiment is substantially the same as that of embodiment 1, except that a knob 11 connected to each eccentric lock block is provided, and when the seat footrest is in operation, the eccentric lock blocks are rotated by rotating the knobs 11, so as to lock or unlock the footrest.

When the knob 11 is provided, the rotating shaft may be omitted, or may be changed to a structure integrated with the hollow shaft.

Example 3.

As shown in fig. 6, a seat includes a seat frame 12 and a seat footrest installed at a lower side of the seat frame 12; characterized in that, the seat pedal is as described in embodiment 1, and comprises a slide rail 1, a pedal 2 and a connecting seat 7. The frame 12 is preferably a single frame mesh frame.

Example 4.

As shown in fig. 7, a seat includes a seat frame 12 and a seat footrest installed at a lower side of the seat frame 12; the seat pedal is characterized in that the seat frame 12 is preferably made of aluminum alloy, a hollow U-shaped seat support 13 is arranged at the bottom of the aluminum alloy, and a sliding groove matched with the sliding rail is directly arranged on an inner cavity of the seat support 13.

Example 5.

As shown in fig. 7, a seat includes a seat frame 12 and a seat footrest installed at a lower side of the seat frame 12; characterized in that, the chair pedal is as described in embodiment 2, the seat frame 12 is preferably a plastic two-piece member, and a plastic chassis 14 is mounted to the bottom of the seat frame 12. In some embodiments, the frame 12 may also be a plastic double frame cotton seat; the present embodiment is not limited.

It will be appreciated by those skilled in the art from the foregoing description of construction and principles that the utility model is not limited to the specific embodiments described above, and that modifications and substitutions based on the teachings of the art may be made without departing from the scope of the utility model as defined by the appended claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.

Claims (10)

1. A seat footrest, comprising: the pedal is arranged at the outer end part of the sliding rail; the bicycle is characterized in that a hollow shaft is arranged at the front end of the slide rail, and the pedal is sleeved on the hollow shaft to form rotary connection; the hollow shaft is internally provided with an eccentric locking block which is rotatably installed, the wall of the hollow shaft is provided with a notch corresponding to the eccentric locking block, and the inner wall of the sleeving part of the pedal is provided with a locking groove matched with the eccentric locking block.

2. The footrest for a chair of claim 1, wherein said rails are arranged in parallel and each of said rails is slidably connected to the bottom of the seat by a connecting base or a seat support.

3. The step of claim 2 wherein a retaining sleeve is mounted at the front end of each of said tracks, said hollow shaft and said retaining sleeve forming an axially movable, radially fixed connection therebetween.

4. A seat footrest according to claim 1, characterized in that an annular transition piece is provided between the footrest and the hollow shaft, said transition piece being radially fixed and axially slidable with respect to the socket of the footrest; a plurality of first grooves are formed in the inner peripheral edge of the transition connecting piece, each first groove forms a locking groove, and a plurality of second grooves are formed in the outer periphery of the eccentric locking block; the locking of the pedal is realized through the locking matching of the second groove and the first groove.

5. The chair footrest of claim 2, wherein a rotating shaft is connected between the two eccentric locking pieces, and the two eccentric locking pieces are rotated by rotating the rotating shaft.

6. A chair footrest according to claim 2, characterized in that a knob is associated with each eccentric locking piece, the rotation of the eccentric locking piece being obtained by rotating the knob.

7. A chair seat comprises a seat frame and a chair pedal arranged at the lower side of the seat frame; characterized in that the chair is pedalled according to any one of claims 1 to 6.

8. The chair seat according to claim 7, wherein the seat frame is a single frame or a double frame formed by splicing an upper frame and a lower frame; a cotton seat or a net seat is fixed on the seat frame.

9. A chair seat according to claim 7, wherein the seat frame is made of aluminum alloy, a hollow U-shaped seat holder is arranged at the bottom of the seat frame, and a sliding groove matched with the sliding rail is arranged on the inner cavity of the U-shaped seat holder.

10. A seat as claimed in claim 7, wherein the frame is of plastics material and a plastics material base is mounted to the bottom of the frame.

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